I strip all used diapers that I purchase before using them on my baby b/c chances are you won't use the same detergent the previous mama used, and like you said, the baby could have had yeast or some other infection that you don't want to give to your own baby.

If its just a few diapers. I strip them in the sink. Squirt some Dawn on each one, use a toothbrush or just rub the fabric against itself to kind of scrub the dipe. I let it soak in really hot water for a bit then rinse it well.

And I always bleach used diapers. If you're going to do a full load and just bleach everything, about 1/4 cup is good.

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Single mama to my sweet D. Taking life one day at a time.